Sokuhansha Co., Ltd. is manufacturer of screw gauges and custom-made screw gauge.
we made every screw gauge of trust based on reliable traceability as authentication based on manufacturer ISO9001

Limit screw gauge [ISO method]	Limit screw gauge [conventional JIS method]	Parallel limit pipe thread gauge [G · PF]	Taper pipe thread gauge [R]
Taper thread gauge for tube [PT]	Taper pipe thread gauge [NPT · NPTF]	Standard screw gauge [JMAS standard]	Master ring gauge Carbide master ring gauge
Zirconia ceramic master ring gauge	Limit plain gauge (plug gauge)	Half plug gauge Carbide plug gauge plate scissors gauge	Taper gauge Tapered test bar